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The alias file must have mode 0644 or less permissive.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-832 | GEN004380 | SV-832r2_rule | ECLP-1 | Medium |
| Description |
|---|
| Excessive permissions on the aliases file may permit unauthorized modification. If the alias file is modified by an unauthorized user, they may modify the file to run malicious code or redirect email. |
| STIG | Date |
|---|---|
| VMware ESX 3 Server | 2016-05-13 |
Details
| Check Text ( C-8032r2_chk ) |
|---|
| Find the aliases file on the system. Procedure: # find / -name aliases -depth -print Check the mode of the alias file. Procedure: # ls -lL If the alias file has a mode more permissive than 0644, this is a finding. |
| Fix Text (F-986r2_fix) |
|---|
| Change the mode of the /etc/mail/aliases file (or equivalent, such as /usr/lib/aliases) to 0644. Procedure: # chmod 0644 /etc/aliases |